.btn {
  border: none;
  background: none;
  outline: none;
  padding: 6px 5px;
  cursor: pointer;
  border-radius: 4px;
  transition: all .2s;
  display: inline-flex;
  align-items: center;
  height: 28px;
  font-size: inherit;
  box-sizing: border-box;
  > span {
    white-space: nowrap;
  }

  &:hover {
    background: rgba(0, 0, 0, .1);
  }

  &-arrow {
    position: relative;
    width: 1em;
    transform: rotate(0);
    transform-origin: 50%;
  }

  &.active {
    background: rgba(0, 0, 0, .1);

    .btn-arrow {
      transform: rotate(180deg);
    }
  }

  &.highlight {
    color: #296eff;
    background-color: #296eff10;
  }
}
